CN104441976A - Liquid ejecting apparatus - Google Patents
Liquid ejecting apparatus Download PDFInfo
- Publication number
- CN104441976A CN104441976A CN201410477761.6A CN201410477761A CN104441976A CN 104441976 A CN104441976 A CN 104441976A CN 201410477761 A CN201410477761 A CN 201410477761A CN 104441976 A CN104441976 A CN 104441976A
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- CN
- China
- Prior art keywords
- liquid
- road
- recovery
- ink
- road portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
- B41J2/185—Ink-collectors; Ink-catchers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/54—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements
- B41J3/543—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed with two or more sets of type or printing elements with multiple inkjet print heads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/20—Modules
Landscapes
- Ink Jet (AREA)
Abstract
A liquid circulation part has a recovery path where a liquid flows into a retaining part from a first head and a second head. The recovery path has a first merging point where the liquid flowing from the first head and the liquid flowing from the second head are merged, a first recovery path part where the liquid flowing from the first head flows into the first merging point, and a second recovery path part where the liquid flows from the first merging point. The cross-sectional area of the second recovery path part, orthogonal to a direction of flow of the liquid in the second recovery path part, is greater than the cross-sectional area of the first recovery path part, orthogonal to the direction of flow of the liquid in the first recovery path part.
Description
Technical field
The present invention relates to the liquid injection apparatus of the head possessing multiple atomizing of liquids, particularly make the technology of liquid-circulating via multiple head.
Background technology
As this liquid injection apparatus, there will be a known the ink-jet recording apparatus that such as patent document 1 is recorded.In the apparatus, distributed from the ink of ink cartridge supply by providing ink manifold.More specifically, the first shunting stream of ink through extending from providing ink manifold distributes supply to each head module.On the other hand, the ink of discharging from each head module is recovered to ink recovery manifold through the second shunting stream, then returns ink cartridge from ink recovery manifold.Like this, constitute from ink cartridge supply ink via multiple head again by the ink circulation system of ink recovery to ink cartridge.
Prior art document
Patent document 1: Japanese Patent Application Publication 2011-79169 publication.
Summary of the invention
Invent problem to be solved
In the device that above-mentioned patent document 1 is recorded, providing ink manifold and ink recovery manifold any one in, in order to gas is separated and enough thick internal flow path up and down with ink when the gas be all provided with in the ink is mixed into, but it is formed in detail does not record.Herein, if make the area of section of internal flow path be constant, then changed by pressure loss during shunting stream each.Especially, the impact produced in recovery side (also referred to as returning trackside) pressure oscillation is large, and this causes the decline of the jet performance of liquid.Namely, when the area of section of the internal flow path of ink recovery manifold is constant, internal flow path any one in flow path resistance be all constant.Therefore, increased by the flow in internal flow path during the second shunting stream each, the pressure loss increases.Its result, the pressure acted at the meniscus (メ ニ ス カ ス) of the nozzle of each head significantly changes, liquid to be injected in every head all different.
The object of this invention is to provide and make liquid-circulating via multiple head and from the liquid injection apparatus of each head atomizing of liquids, making the technology to each head applied pressure homogenising.
For the means of dealing with problems
The liquid injection apparatus that the present invention relates to, is characterized in that, possesses: storage unit, and it stores liquid; First and second, its atomizing of liquids; With liquid-circulating portion, it makes liquid flow to storage unit from storage unit via first and flow to storage unit via second, liquid-circulating portion has liquid flows to storage unit recovery road from first and second, reclaims road and has: from first liquid flowed out and the first point from second liquid joint flowed out; Road portion is reclaimed from first of first flow direction first point flowed out; What flow out from the first point with liquid second reclaims road portion, with second reclaims the second orthogonal area of section reclaiming road portion of the flow direction of the liquid at place of road portion compare and first reclaim the flow direction of the liquid at place of road portion orthogonal first to reclaim the area of section in road portion large.
In the invention formed as described above, reclaim with respect to first the liquid that road portion flows to the first point, from second liquid reclaimed after the first point converges, together reclaim road portion by second with the liquid reclaimed from first and flow to storage unit.Therefore, the flow of the liquid that the flow-rate ratio reclaiming the liquid of road portion flowing second flows in the first recovery road portion is many.Herein, when first reclaims road portion and second to reclaim road portion be same cross-sectional area, reclaim second pressure oscillation located that road portion is communicated with increase with second.So, in the present invention, by making the area of section in the second recovery road portion reclaim the area of section in road portion greatly than first, and the flow path resistance in the second recovery road portion is declined to suppress above-mentioned pressure oscillation.Its result, can make to first and second applied pressure homogenising.
Herein, possess the 3rd, its atomizing of liquids, from the 3rd reclaim liquid with by second reclaims road portion stream liquid (from first and second liquid reclaimed) after the second point converges, when flowing to storage unit by the 3rd recovery road portion, preferably form as described above.Namely, reclaim with the 3rd the 3rd orthogonal area of section reclaiming road portion of the flow direction of the liquid at place of road portion than and second reclaim the flow direction of the liquid at place of road portion orthogonal second to reclaim the area of section in road portion large.Like this, although increase at the 3rd flow of liquid reclaiming the flowing of road portion, the 3rd flow path resistance reclaiming road portion declines, and therefore can suppress to reclaim with the 3rd the 3rd pressure oscillation located that road portion is communicated with.Its result, with first and second independently, also can homogenising to the 3rd applied pressure.
In addition, as the concrete grammar of adjustment area of section, such as, in the width in the cross section that place of portion, each recovery road can be made orthogonal from the flow direction of liquid and the degree of depth at least one is different between the portion of multiple recovery road.But, consider liquid-circulating portion, the shaping easiness particularly reclaiming road and/or forming accuracy raising etc. time, preferably make in the width in cross section and the degree of depth one equal, make another different.
In addition, in the present invention as stated above, although make the area of section in the recovery road portion in upstream side and downstream different relative to fluidic junction, be arbitrary for the area of section in each recovery road portion.Such as, when making the area of section in this recovery road portion be constant on the flow direction of the liquid in each recovery road portion, poor at point height of formation.Therefore, change significantly in the flowing of step-like point place liquid, produce disturbance in flowing.Such as, using the white ink of the material high containing settleability as in the device of Liquid inject, can obtain making sedimentation reply this action effect by above-mentioned disturbance arbitrarily.
On the other hand, can be configured on the flow direction of the liquid at place of portion, each recovery road, make the area of section in this recovery road portion increase continuously, in this case, the generation of above-mentioned disturbance can be suppressed.
Further, have in liquid-circulating portion the device on the supply road from storage unit to first and second feed fluid, the formation on this supply road is comprised: from the separating liquid supplied from storage unit to the first split point of the liquid of first supply; Make the first supply road portion of flow direction first split point; With the second supply road portion made less than being flowed out from the first split point by the liquid shunted at the first split point.In this case, the changes in flow rate of liquid can be seen in the front and back by the first split point.Namely, reduced at the flow of the liquid of the second supply road portion flowing the amount supplied to first by shunting at the first split point.Herein, when the first supply road portion and the second supply road portion are same cross-sectional area, generation and second supplies second pressure oscillation located that road portion is connected.So, by making the area of section in the second supply road portion less than the area of section in the first supply road portion, and the flow path resistance in the second recovery road portion is increased to suppress above-mentioned pressure oscillation.Like this, can make to first and second applied pressure homogenising better.
Accompanying drawing explanation
Fig. 1 is the front view schematically representing the formation that can be suitable for printer of the present invention.
Fig. 2 is the block diagram schematically representing that the electricity of the printer shown in control chart 1 is formed.
Fig. 3 is the figure of the configuration example of the feed system schematically represented to head supply ink.
Fig. 4 is the figure of the formation representing manifold.
Fig. 5 is the figure of the action for illustration of manifold.
Description of reference numerals:
1 printer (liquid injection apparatus) 6,6a ~ 6k 62 boxes (storage unit) 63 supply line 65 reclaims stream 66 circulating path 100 manifold 107,108 supply line 114 and reclaims path (recovery road) 1141 ~ 1145 recovery road portion BP1 split point JP1 ~ JP4 point
Detailed description of the invention
Fig. 1 is the front view schematically representing the formation that can be suitable for printer of the present invention.Further, in Fig. 1 and following accompanying drawing, as required, in order to the configuration relation of each several part of clear and definite printer 1, and have employed and the left and right directions X of printer 1, three-dimensional system of coordinate that fore-and-aft direction Y and vertical Z is corresponding.
As shown in Figure 1, in printer 1, be arranged with releasing portion 2, handling part 3 and reeling end 4 in the lateral direction.Releasing portion 2 and reeling end 4 have respectively releases axle 20 and winding off spindle 40.And, in releasing portion 2 and reeling end 4, the two ends of sheet material S (medium) are wound into roll, and set up between the two.Along the feed path P c that sets up as described above, sheet material S being transported to from releasing axle 20 the image recording processing that handling part 3 carries out to accept printing element 6U, then, carrying to winding off spindle 40.The kind of this sheet material S is divided into paper system and film system substantially.Further, in the following description, by the two sides of sheet material S, record image face be called surface, on the other hand, the face of its opposition side is called the back side.
Releasing portion 2 has: the releasing axle 20 of the end of roll sheet S; With the driven voller 21 around the sheet material S hung from the pull-out of releasing axle 20.Rotated by releasing axle 20 and the sheet material S releasing axle 20 winding is released to handling part 3 via driven voller 21.
At handling part 3, the sheet material S platform 30 of releasing from releasing portion 2 is supported and uses printing element 6U to come to record image at sheet material S.Namely, printing element 6U has multiple 6 of the surface alignment along platform 30, and 6 to the sheet material S of the surface support by platform 30 spray ink, thus record image at sheet material S.At this handling part 3, be provided with forerunner's action roller 31 and rear-guard action roller 32 in the both sides of platform 30, the driven roller 31 sheet material S that driven roller 32 is carried backward is supported by platform 30 with the printing of acceptance pattern picture in the past.
Be provided with driven voller 33,34 in the left and right sides of platform 30, driven voller 33,34 from rear side around hanging the in the past driven roller 31 sheet material S that carries of driven roller 32 backward.
Niproll 31n is provided with relative to forerunner's action roller 31.This niproll 31n reliably can carry out the conveying of the sheet material S that forerunner's action roller 31 carries out by sandwiching sheet material S between forerunner's action roller 31.Similarly, niproll 32n is provided with relative to rear-guard action roller 32.
Like this, the driven roller 31 sheet material S that driven roller 32 is carried backward is supported by platform 30 and carries on throughput direction Ds on platform 30 in the past.And, at handling part 3, with ink-jetting style multiple 6 of ink spray to the surface of the sheet material S supported by platform 30 relative with the surface of platform 30 and arrange on throughput direction Ds.This 6 each, in the Y-direction orthogonal with throughput direction Ds, linearity arranges multiple nozzle and forms nozzle rows, more multiple nozzle rows is arranged across compartment of terrain on throughput direction Ds.Therefore, each row image that side by side can record multirow of 6.And, 6 relative to the sheet material S supported by platform 30 surface across some ground, spaces relatively, and the ink of corresponding color to be sprayed with ink-jetting style.
Color inks in this sprays the ink of yellow (Y), blue-green (C), magenta (M) and black (K) to form coloured image respectively with 6.In addition, 6 are parts of the ink spraying white (W) what configure by the upstream side (left-hand side of Fig. 1) of throughput direction Ds with 6 than this color inks, and printing is by the background (hereinafter referred to as " background image ") of 6 coloured image formed of above-mentioned color inks.Further, 6 are the parts spraying transparent ink what configure by the downstream (right-hand side of Fig. 1) of throughput direction Ds with 6 than this color inks, and further transparent ink is sprayed to coloured image and background image.
Namely, as ink, UV (ultraviolet (the ultraviolet)) ink (photo-hardening ink) of the sclerosis by irradiation ultraviolet radiation (light) is used.So, in the present embodiment, be provided with the UV lamp 38 of the UV lamp 36 of background image, UV lamp 37a, 37b of coloured image and transparent ink.Namely, UV lamp 36,37a, 37b, 38 make each ink harden with fixing at sheet material S.
Like this, at handling part 3, the sheet material S supported suitably is carried out to injection and the sclerosis of ink by platform 30, to form the coloured image of the band background image such as covered by transparent ink.And the sheet material S being formed with this coloured image is carried to reeling end 4 by rear-guard action roller 32.
Reeling end 4 has: the winding off spindle 40 reeled by the end of sheet material S; With the sheet material S will carried to winding off spindle 40 around the driven voller 41 hung.Rotated by winding off spindle 40, and via driven voller 41, sheet material S is wound in winding off spindle 40.
It is more than the overview that the machinery of printer 1 is formed.Then, the electricity formation controlling printer 1 is described.Fig. 2 is the block diagram schematically representing that the electricity of the printer shown in control chart 1 is formed.In printer 1, be provided with printer control part 200, this printer control part 200 controls each portion of printer 1 according to the instruction of the master computer from outside etc.And each portion of device of head, UV lamp, sheet transport system and ink supply system is controlled by printer control part 200.Details as Follows for the control in each portion of this device for printer control part 200.
Printer control part 200 manages the function of the conveying of the control sheet material S using Fig. 1 to describe in detail.Namely, in the parts forming sheet transport system, release axle 20, forerunner's action roller 31, rear-guard action roller 32 and each of winding off spindle 40 be connected with motor.Printer control part 200 makes this group of motors rotate and controls speed and/or the torque of each motor, to control the conveying of sheet material S.
Further, printer control part 200 according to the conveying condition of the sheet material S on platform 30 control the action of printing element 6U and/or UV lamp 36,37a, 37b, 38 action.
In addition, at printer 1, the display 53 as user interface is provided with.The formation of display 53 comprises Trackpad, except the Presentation Function shown user, also has the input function accepted from the input of user.And various information and/or instruction show at display 53 by printer control part 200, and control each several part of printer 1 according to the input from user.
Then, the configuration example of the ink supplying mechanism that printer 1 is equipped is described.Fig. 3 is the figure of the configuration example of the feed system schematically represented to head supply ink.In ink supplying mechanism, each ink color is all had to the providing ink portion 61 controlling the supply of ink according to the action command of printer control part 200.These six providing ink portions 61 have identical formation substantially.Namely, providing ink portion 61 has: the box 62 (being equivalent to " storage unit " of the present invention) of storage ink; The supply line 63 (supply pipe) that this box 62 is connected with manifold 100; Be arranged at the liquid-feeding pump 64 of supply line 63; And the recovery stream 65 (recovery tube) that manifold 100 is connected with box 62.Like this, box 62, supply line 63, manifold 100, recovery stream 65 and box 62 are formed ink with the circulating path 66 of this sequential flowing, and plays function as " liquid-circulating portion " of the present invention.
With correspond to white ink, four kinds of color inks, transparent ink 6 and arrange providing ink portion 61 respectively similarly, be all provided with manifold 100 in often kind of color.Such as, as 6 of white ink, be provided with multiple (being 11 in the present embodiment) head, this 6 with white ink with manifold 100 be connected.This manifold 100 have the white ink supplied through supply line 63 is divided into white ink with 6 number quantity with the function to each 6 supplies with the white ink reclaimed from each 6 is converged at recovery stream 65 with the mechanism sent to box 62.Other ink color manifold 100 also has the formation identical with white ink manifold 100.Further, for the detailed formation of manifold 100 and action, describe in detail below.
Get back to Fig. 3, proceed the formation explanation in providing ink portion 61.Providing ink portion 61 also has: the ink feed mechanism 67 carrying out ink feed to box 62; With the pressure adjustmenting mechanism 68 of the pressure in adjustment box 62.Ink feed mechanism 67 has: the ink reservoir bodies 671 such as print cartridge and/or ink bag; The supply stream 672 (supply pipe) that ink reservoir body 671 is connected with box 62; And be arranged at the replenishment pump 673 of supply stream 672.And, by according to making replenishment pump 673 rotate forward (forward) is upper from the supply instruction of printer control part 200, thus by the ink in ink reservoir body 671 through supply stream 672 supply to box 62.
In addition, pressure adjustmenting mechanism 68 has the Loading paths (adding press fit pipe) 681 be connected with box 62 by pressurized buffer box described later and the triple valve 682 being arranged at Loading paths 681.And, by according to making triple valve 682 work the pressure adjusted in box 62 from the Vavle switching instruction of printer control part 200.Namely, this triple valve 682 has to switch and leads to the path of box 62 from pressurized buffer box described later and import the function in path of air to box 62, and can select each path according to the switching command from printer control part 200.Such as, when switching to the path from pressurized buffer box towards box 62, by the malleation put aside at pressurized buffer box, box 62 being pressurizeed, and improving the pressure in box 62.Otherwise, switch to import the path of air to box 62 time, revert to atmospheric pressure in box 62.
Further, providing ink portion 61 is in order to remove the gas componants such as bubble contained by ink and be provided with degassed portion 69.Namely, in supply line 63, except liquid-feeding pump 64, also relative to liquid-feeding pump 64, degassed portion 69 is set in the downstream in providing ink direction, and uses degas module by the ink degassings to 6 supplies.
As shown in Figure 3, each degassed portion 69 is connected with pressure-reducing cushioning box 71 through negative pressure feeding path 691c.Pressure-reducing cushioning box 71 has such as cylindrical shape, and negative pressure can be put aside in space therein.Pressure-reducing cushioning box 71 is connected with vavuum pump 8 by negative pressure lead-in path (pipe arrangement) 72.In addition, at negative pressure lead-in path 72, triple valve 73 is provided with.This triple valve 73 has the function in the path switched from pressure-reducing cushioning box 71 towards vavuum pump 8 and the path importing air to vavuum pump 8, and can select each path according to the instruction from printer control part 200.Such as, when switching to the path from pressure-reducing cushioning box 71 towards vavuum pump 8, drawing the air in pressure-reducing cushioning box 71 by vavuum pump 8 and the pressure of the inner space of pressure-reducing cushioning box 71 is reduced.On the other hand, switch to import the path of air to vavuum pump 8 time, stop the decompression of pressure-reducing cushioning box 71 that vavuum pump 8 carries out.Further, be provided with B/P EGR Back Pressure Transducer EGR 74 in order to the pressure measured in pressure-reducing cushioning box 71.In addition, relatively configure leak sensor 75 with below the side of pressure-reducing cushioning box 71, ink leakage can be detected by leak sensor 75 when ink flows into the inner space of pressure-reducing cushioning box 71.
In addition, in the present embodiment, except pressure-reducing cushioning box 71, pressurized buffer box 81 is also provided with.Pressurized buffer box 81 has the structure identical with pressure-reducing cushioning box 71, and malleation can be put aside in space therein.Namely, pressurized buffer box 81 is connected with vavuum pump 8 by pressurization lead-in path (pipe arrangement) 82.In addition, at pressurization lead-in path 82, triple valve 83 is provided with.This triple valve 83 has the function in the path switched from vavuum pump 8 towards pressurized buffer box 81 and the path air from vavuum pump 8 being released to air, and can select each path according to the instruction from printer control part 200.Such as, when switching to the path from vavuum pump 8 towards pressurized buffer box 81, applying air by vavuum pump 8 to pressurized buffer box 81, and the pressure of the inner space of pressurized buffer box 81 is increased.On the other hand, switch to the malleation from vavuum pump 8 is released to the path of air time, stop the forced feed from vavuum pump 8 to pressurized buffer box 81.Further, be provided with boost pressure sensor 84 in order to the pressure measured in pressurized buffer box 81.
In addition, one end of common Loading paths (pipe arrangement) 85 is connected with at pressurized buffer box 81.Other end shunting (bifurcated) of this common Loading paths 85 is six, and each shunt paths plays function as Loading paths 681.Have again, at common Loading paths 85, be provided with triple valve 86, this triple valve has the function that the pressurization switching the path and self-pressurization in future buffer pocket 81 that lead to each providing ink portion 61 from pressurized buffer box 81 is released to the path of air, and can select each path according to the switching command from printer control part 200.Such as, when switching to the path from pressurized buffer box 81 towards each providing ink portion 61, the forced air in pressurized buffer box 81 is supplied to each providing ink portion 61.On the other hand, when switching to the forced air of the buffer pocket of self-pressurization in the future 81 to be released to the path of air, stopping leading to each providing ink portion 61 from pressurized buffer box 81 and supplying forced air.
Then, concrete formation and the action of manifold 100 are described with reference to Fig. 3 to Fig. 5.Fig. 4 is the figure of the formation representing manifold, and same figure (a) is stereoscopic figure, and same figure (b) is Partial Resection top view, and same figure (c) is upward view.Although be provided with manifold 100 at often kind of ink color, these manifolds have identical formation.Therefore, following, the manifold 10 of white be described, and omit other explanation.
This manifold 100 possesses: the main part 101 with flat (ス ラ Block) shape; With three chip parts 102 ~ 104.In (-X) side surface part and the bottom surface sections of main part 101, be provided with groove portion 105 (with reference to Fig. 4 (b)) and groove portion 106 (with reference to Fig. 4 (c)) respectively in the Y direction.(+Y) the side end in groove portion 105 and groove portion 106 is communicated with by the intercommunicating pore (omitting diagram) of the inside being formed at main part 101.In addition, as shown in Fig. 4 (b), chip part 102 is installed on (-X) side surface part of main part 101 to be closed in groove portion 105 and to form supply line 107, as shown in Fig. 4 (c), chip part 103 is installed on the bottom surface sections of main part 101 to be closed in groove portion 106 and to form supply line 108.Further, the (-Y) side end in groove portion 105 is extended on (+X) direction in the inside of main part 101 as shown in Fig. 4 (b), and be communicated with the supply side port one 09 be connected with supply line 63.Therefore, flow in above-mentioned supply line 107,108 to the pressure-feed ink of main part 101 through supply line 63 and supply side port one 09.This supply line 107,108 plays function as " supply road " of the present invention.
In addition, groove portion 106 is communicated with the base end part (namely ,+Z side end) of 11 supplying tubing 110a ~ 110k.The base end part of supplying tubing 110a ~ 110k (namely ,-Z side end) extends respectively to 6 of correspondence, and connects one to one.Therefore, the ink flowed in supply line 108 supplying tubing 110a ~ 110k shunt respectively and to correspondence 6 supplies.Like this, in the present embodiment, the head that 11 heads 6 are used as spraying white ink is provided with.So, in order to distinguish each 6, and 6 of side, (+Y) direction will be positioned at be called " head 6a ", and 6 of side, (-Y) direction will be positioned at successively be called " head 6b " ~ " head 6k ".In addition, the position of the head 6a ~ 6k in Y-direction is set to " head slot # 1 " ~ " head slot # 11 " respectively.In addition, constitute and six head 6a, 6c, 6e, 6g, 6i, 6k are arranged with the head of a determining deviation arrangement in the Y direction and remaining head 6b, 6d, 6f, 6h, 6j are arranged with the head of a determining deviation arrangement in the Y direction.And, configure two row in the X direction under this being listed in the state offset mutually in the Y direction with half amount of separation.
At head 6b ~ head 6k, be connected to the leading section of the ink recovery for reclaiming from this to the recovery pipe arrangement 111a ~ 111k of manifold 100.In addition, reclaim pipe arrangement 111a ~ 111k to be communicated with the groove portion 112 that the upper surface portion at main part 101 is formed by the inside of main part 101.This groove portion 112 is extended in the Y direction with length (width) W in X-direction.But, in the present embodiment, as described later, groove portion 112 is processed into the degree of depth along with go forward in (-Y) direction so that the stage deepen.And with reference to Fig. 5 in detail its reason is described in detail below.
The end, (-Y) direction in the groove portion 112 formed as described above is extended on (-Y) direction in the inside of main part 101, and with reclaim the recovery side ports 113 that stream 65 is connected and be communicated with.And the position of the opening up in groove portion 112 is closed by chip part 104 (Fig. 5), thus form recovery path 114.Therefore, the ink from the beginning reclaimed through each recovery pipe arrangement 111a ~ 111k converges in recovery path 114, and returns box 62 through reclaiming side ports 113 and reclaiming stream 65.Like this, in the present embodiment, reclaim path 114 and play function as " recovery road " of the present invention.
Then, providing ink, the recovery action at manifold 100 place are described with reference to Fig. 5.Fig. 5 is the figure of the action for illustration of manifold, and the cross-section structure in same figure illustrates the A-A line direction structure of Fig. 4.In order to understand the action based on Fig. 5, and to form (+X) side head row head 6b, 6d, 6f, 6h, 6j place ink supply, reclaim and be described, but head in (-X) side is also identical in arranging.
When ink is transported to the main part 101 of manifold 100 through supply line 63 and supply side port one 09 by pressure from box 62, this ink flows in supply line 107,108.And a part for the ink supplied from box 62 in supply line 108 and the link position of supplying tubing 110b, i.e. split point BP1 place is shunted, and supplies to head 6b through supplying tubing 110b.On the other hand, remaining ink flows in supply line 108 from split point BP1 and again a part for ink is shunted at next split point (position be connected with supply line 108 and supplying tubing 110d) BP2, and supplies to head 6d through supplying tubing 110d.Further, limit repeats this type of shunting supply action limit supply ink to each head 6f, 6h, 6j.
On the other hand, the ink that from the beginning 6b reclaims flows into by reclaiming pipe arrangement 111b and reclaims path 114, and flows to box 62 in recovery path 114.And link position, i.e. point JP1 place that this ink is reclaiming path 114 and recovery pipe arrangement 111d converge with the ink that from the beginning 6d reclaims.From this point JP1, the recovery ink from head 6b continues to flow to box 62 together with the recovery ink from head 6d in recovery path 114.This converges action and is reclaiming link position (point JP2), the recovery path 114 of path 114 and recovery pipe arrangement 111f and reclaiming the link position (point JP3) of pipe arrangement 111h and reclaim link position (point JP4) implementation of path 114 and recovery pipe arrangement 111j.And the recovery ink flowing to recovery side ports 113 through reclaiming path 114 returns box 62 through reclaiming stream 65.
In this embodiment, as mentioned above, groove portion 112 the degree of depth along with go forward in (-Y) direction so that the stage deepen.More specifically, as shown in Figure 5, that reclaims in path 114 is more shallow by the portion 1141, recovery road of (+Y) side than point JP1, becomes degree of depth h2 (> h1) in the point JP1 place degree of depth from degree of depth h1, and poor at point JP1 place height of formation.In addition, reclaiming the recovery road portion 1142 from point JP1 to next point JP2 in path 114, the degree of depth is constant depth h2, but, become degree of depth h3 (> h2) in the point JP2 place degree of depth from degree of depth h2, and also form difference in height at point JP2 place.For later recovery road portion 1143 ~ 1145 too.
Like this, at each point JP1 ~ JP4, be positioned at and be positioned at the degree of depth in the recovery road portion of upstream side deeply than the depth ratio in the recovery road portion of this point downstream, the cross-sectional area in recovery road, downstream portion is larger than the cross-sectional area in the recovery road portion of upstream side.Therefore, following action effect can be obtained.Namely, at this point place reclaim ink and reclaim at upstream side the ink flowed in road portion and converge, therefore many at the flow of the liquid of upstream side recovery road portion flowing in the flow-rate ratio of the liquid of recovery road, downstream portion flowing.Herein, when the degree of depth that two reclaim road portion is identical (comparative example in Fig. 5), each flow path resistance R reclaiming road portion is identical value.In other words, flow path resistance R can be obtained by following formula.
Formula 1
μ in formula is the viscosity of ink, and L is the length in the recovery road portion on the flow direction of ink.
In the present embodiment, with by head equidistantly to configure accordingly, by recovery pipe arrangement also equidistantly to configure, L=L1=L2=L3=L4.In addition, width W is also constant.Therefore, if the degree of depth that upstream side reclaims road portion and recovery road, downstream portion is identical, then the flow path resistance R respectively reclaiming road portion is identical.Therefore, in a comparative example, the pressure oscillation at 6 place be connected with recovery road, downstream portion increases, and as shown in phantom in Figure 5, the head value applied to the meniscus of the nozzle of each 6 because of the head difference with the ink level in box 62 changes in larger pressure limit.
In contrast, in the present embodiment, in arbitrary point JP1 ~ JP4, all make recovery road, downstream portion reclaim road portion deeply than upstream side, thus the flow path resistance in recovery road, downstream portion is declined.Therefore, above-mentioned pressure oscillation can be suppressed.Its result, the head value that the meniscus to the nozzle of each 6 applies changes compared with comparative example in narrower pressure limit, can realize the homogenising of pressure.
In addition, in the above-described embodiment, the flow direction of the ink at place of portion 1141 ~ 1145, each recovery road make the area of section in this recovery road portion be constant, and poor at each point JP1 ~ JP4 place height of formation.Therefore, ink stream changes and disturbance significantly in each difference in height part.Agitating ink water constituent can be carried out with the disturbance of this ink stream.Especially, white ink contains the high material of settleability, therefore, easily because of above-mentioned disturbance, sedimentation is replied, and adopts difference in height to form be suitable for suppressing spray nozzle clogging etc. at white ink manifold 100.
In addition, in the above-described embodiment, at supply side, also have employed the formation similar with reclaiming side as shown in Figure 5.Each split point BP1 ~ BP4 place in supply line 108, by making highly difference make flow path resistance change in the upstream side supply road portion being positioned at upstream side relative to this shunt position with supply road, the downstream portion being positioned at downstream.This is in order in and that adopt formation corresponding with the changes in flow rate of ink by the front and back of each split point BP1 ~ BP4.Namely, to decrease at split point by shunting to an amount for 6 supplies at the flow of ink of supply road, downstream portion flowing.So, by making supply road, downstream portion lower than upstream side supply road portion, and make the cross-sectional area in supply road, the downstream portion of the flow direction of ink less than the cross-sectional area in upstream side supply road portion.Like this, improve the flow path resistance in supply road, downstream portion accordingly with the minimizing of ink flowrate, and can realize to each 6 applied pressures evenly change.
Further, in the present embodiment, as shown in Figure 5, make the flow direction of the ink of supply line 108 consistent with the flow direction of the ink reclaiming path 114.And, will the height of supply line 108 stage ground step-down and the degree of depth in recovery path 114 is deepened to the stage on the direction of ink stream combine on the direction of ink stream be made.Therefore, the slimming of manifold 100 can be realized.
Like this, in the present embodiment, upstream side supply road portion and supply road, downstream portion are equivalent to " the first supply road portion " of the present invention and " the second supply road portion " respectively.In addition, upstream side reclaims road portion and recovery road, downstream portion is equivalent to " first reclaims road portion " of the present invention and " second reclaims road portion " respectively, further, be equivalent to " the 3rd reclaims road portion " of the present invention than the recovery road portion of recovery road, downstream portion downstream.
Further, the invention is not restricted to above-mentioned embodiment, can by appropriately combined for the key element of above-mentioned embodiment or carry out various change when not departing from purport of the present invention.Such as, in the above-described embodiment, the flow direction of the ink at place of portion 1141 ~ 1145, each recovery road make the cross-sectional area in this recovery road portion be constant, but, also can be configured to make the bottom surface in each recovery road portion 1141 ~ 1145 be inclined plane and cross-sectional area be increased along with the flow direction of ink.For this point, in supply side, road portion too, can be configured to make the end face in each supply road portion be inclined plane and cross-sectional area be reduced along with the flow direction of ink.
In addition, in the above-described embodiment, in order to the cross-sectional area making the cross-sectional area in recovery road, downstream portion reclaim road portion than upstream side is large, and make recovery road, downstream portion darker than upstream side recovery road portion, but, also can carry out adjusting to replace the degree of depth or hierarchy structure is together used with the width reclaiming road portion.Namely, by making the width in recovery road, downstream portion wider than upstream side recovery road portion, the cross-sectional area in recovery road, downstream portion can be made to reclaim road portion than upstream side cross-sectional area is large.Herein, when considering the raising etc. of the shaping easiness in recovery road portion 1141 ~ 1145 of manifold 100 and forming accuracy, preferably make in width and the degree of depth one equal, make another different.For this point, for supply road portion too.
In addition, in the above-described embodiment, make box 62 be one, but, also can have two etc. multiple.When having multiple box, the stream be communicated with by multiple box can be had.In this case, multiple box is collectively referred to as " storage unit " with the stream be communicated with by box.
In addition, in the above-described embodiment, the flow direction rightabout each other of the ink in head 6a, 6c, 6e, 6i, 6k of the flow direction of the ink in head 6b, 6d, 6f, 6h, 6j that the head of formation (+X) side is arranged and the head row of formation (-X) side, but, the flow direction of the ink in head is arbitrary, can be configured to be all same direction.
In addition, suitably can change 6 and the configuration of UV lamp and/or a number, or suitably change the shape etc. of platform 30.In addition, also suitably can change the concrete formation of each several part of printer 1, such as, also the formation of 6 can be changed from above-mentioned formation.
In the above-described embodiment, have employed the printer of the ink-jetting style using UV ink, but, also can adopt the liquid injection apparatus spraying or discharge other liquid beyond ink.The various liquid injection apparatus of the liquid injection nozzle of the drop possessing injection small quantity etc. can be applicable to.Further, drop refers to the state of the liquid of discharging from aforesaid liquid injection apparatus, comprising trails granulates, the state of teardrop shaped, silk thread shape.In addition, liquid mentioned here can be the material that liquid injection apparatus can spray.Such as, the material of state when as long as material is liquid phase, not only comprise the fluid state that the high or low liquid condition of viscosity, colloidal sol, gel water, other inorganic solvents, organic solvent, solution, fluid resin, aqueous metal (point molten metal) are such, and the fluid of a state as material, also comprise and the particulate of the functional material comprising the solid content such as pigment and/or metal particle is dissolved, disperses or mix formed material etc. in a solvent.In addition, as the representative instance of liquid, the ink and liquid crystal etc. that illustrate in the above-described embodiment can be enumerated.Here, ink comprises common water-base ink and the various liquid compositions such as oily ink and gel ink, hot melt ink, UV cured ink.As the instantiation of other liquid injection apparatus, can be the liquid injection apparatus of the Liquid inject by containing the materials such as the electrode material that uses in the manufacture etc. of such as liquid crystal display, EL (electroluminescent) display, face active display, colour filter and/or color material in the mode dispersed or dissolved, the liquid injection apparatus that the organism organic matter used is sprayed, to use as accurate pipette and to spray the liquid injection apparatus of the liquid becoming test portion, dyeing and printing device and microsplitter etc. in biochip manufacture.Further, also can adopt critically to the precision optical machinery such as clock and watch and/or camera jet lubrication oil liquid injection apparatus, for be formed in small packaged lens (optical lens) that optical communication device etc. uses etc. liquid injection apparatus, spray UV cured liquid and use up and/or liquid injection apparatus that heat makes it harden, be etching substrates etc. and spray the liquid injection apparatus of etching solution, the liquid injection apparatus in the printing and dyeing of the atomizing of liquids such as cloth such as acid or alkali.And, any one injection apparatus wherein can be applicable to the present invention.
Claims (6)
1. a liquid injection apparatus, is characterized in that,
Possess:
Storage unit, it stores liquid;
First and second, it sprays described liquid; With
Liquid-circulating portion, it makes liquid flow to described storage unit from described storage unit via described first and flow to described storage unit via described second,
Described liquid-circulating portion has described liquid from described first and described second recovery road flowing to described storage unit,
Described recovery road has: from described first the described liquid flowed out and the first point from described second described liquid joint flowed out; Road portion is reclaimed from first of the first point described in described first described flow direction flowed out; With the second recovery road portion that described liquid flows out from described first point,
With described second reclaim the described second orthogonal area of section reclaiming road portion of the flow direction of the described liquid at place of road portion than and described first reclaim the flow direction of the described liquid at place of road portion orthogonal described first to reclaim the area of section in road portion large.
2. liquid injection apparatus according to claim 1, is characterized in that,
Possess the 3rd, it sprays described liquid,
Described liquid-circulating portion makes described liquid via described 3rd and flow to described storage unit by described recovery road,
Described recovery road has: from described first and described second the described liquid flowed out with from described 3rd the second point of described liquid joint flowed out; With the 3rd recovery road portion that described liquid flows out from described second point,
With the described 3rd reclaim the described 3rd orthogonal area of section reclaiming road portion of the flow direction of the described liquid at place of road portion than and described second reclaim the flow direction of the described liquid at place of road portion orthogonal described second to reclaim the area of section in road portion large.
3. liquid injection apparatus according to claim 1 and 2, is characterized in that,
Between the portion of described multiple recovery road, one in the width and the degree of depth in the cross section orthogonal with the flow direction of described liquid, place of portion, each recovery road equal, on the other hand, makes another different, thus make the area of section in described multiple recovery road portion different.
4. liquid injection apparatus according to any one of claim 1 to 3, is characterized in that,
In each recovery road portion, on the flow direction of the described liquid at this place of portion, recovery road, the area of section in this recovery road portion is constant,
Poor at each point height of formation.
5. liquid injection apparatus according to any one of claim 1 to 3, is characterized in that,
In each recovery road portion, on the flow direction of the described liquid at this place of portion, recovery road, the area of section in this recovery road portion increases continuously.
6. liquid injection apparatus according to any one of claim 1 to 5, is characterized in that,
Described liquid-circulating portion has supply road, and this supply road supplies described liquid from described storage unit to described first and described second,
Described supply road has: from the described separating liquid supplied from described storage unit to the first split point of the described liquid of described first supply; Make the first supply road portion of the first split point described in described flow direction; Road portion is not supplied by the described liquid shunted from second of described first split point outflow at described first split point with making,
With described second supply the described second orthogonal area of section supplying road portion of the flowing of the described liquid at place of road portion than and described first supply the flowing of the described liquid at place of road portion orthogonal described first to supply the area of section in road portion little.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013194740A JP6268850B2 (en) | 2013-09-20 | 2013-09-20 | Liquid ejector |
| JP2013-194740 | 2013-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104441976A true CN104441976A (en) | 2015-03-25 |
| CN104441976B CN104441976B (en) | 2017-10-20 |
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| CN201410477761.6A Active CN104441976B (en) | 2013-09-20 | 2014-09-18 | Liquid injection apparatus |
Country Status (3)
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|---|---|
| US (1) | US9216587B2 (en) |
| JP (1) | JP6268850B2 (en) |
| CN (1) | CN104441976B (en) |
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Also Published As
| Publication number | Publication date |
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| JP2015058658A (en) | 2015-03-30 |
| CN104441976B (en) | 2017-10-20 |
| US20150085032A1 (en) | 2015-03-26 |
| JP6268850B2 (en) | 2018-01-31 |
| US9216587B2 (en) | 2015-12-22 |
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